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A random sample of size n = 50 obtained from a population with unknown mean yielded += 25. Assume the standard deviation o =

A random sample of size n = 50 obtained from a population with unknown mean yielded += 25. Assume the standard deviation o = 8. Construct a 95% confidence interval for u. (22.8, 27.2) (11.8, 38.1) (23.1, 26.9) (9.32, 40.7) Consider a random sample of 16 measurements obtained from a normally distributed population with = 450 and s = 60. Construct a 99% confidence interval. > (423.7,476.3) (420.1, 479.9) (405.8, 494.2) None

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